B and T World Seeds' reference number:
The average, annual, minimum temperature zone where Hypericum perforatum Helos is cold hardy
USDA Zone:3 -40° to -30°F (-40° to -34.5°C)
|Type of plant - perennial
|Hypericum perforatum Helos sales history
| Parts of Hypericum perforatum Helos are considered toxic.
Common names for Hypericum perforatum Helos:
|St John's Wort Helos,|
Hypericum perforatum Helos
is included in the following
B and T World Seeds flowering plant categories.
|36||: Herb Seed List Culinary Medicinal Dye and Aromatic|
|Not all medicinal, dye or aromatic plants are edible, some are toxic if eaten and others are dangerous if applied to the skin. Please check uses for plants.|
|43||: Herbaceous Border Plant Seed List|
Some knowledge about growing from seed is necessary to germinate even the easiest seeds.
Most seeds require humidity to germinate, even desert plants like
require that their growing medium remains moist until germination.|
Most seeds require oxygen to germinate, if buried too deep in their growing medium, or if the medium is too wet,
the seeds may not get the oxygen they require.
Hypericum perforatum Helos seeds will usually germinate in 30-90 days, even under good conditions germination may be erratic.